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Finding the Fourth Proportional to 311,955.52, 430,498.61 and 168,715.56

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Solution

The fourth proportional to 311,955.52, 430,498.61 and 168,715.56 is: 232,827.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,955.52 : 430,498.61 = 168,715.56 : x
  2. Step 2: Convert to fraction form
    311,955.52/430,498.61 = 168,715.56/x
  3. Step 3: Cross multiply
    311,955.52x = 430,498.61 × 168,715.56
  4. Step 4: Simplify right side
    311,955.52x = 72,631,814,065.37
  5. Step 5: Solve for x
    x = 72,631,814,065.37/311,955.52
  6. Step 6: Final answer
    x = 232,827.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.